/*  mbed Microcontroller Library
    Copyright (c) 2006-2013 ARM Limited

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/
#include "RawSerial.h"
#include "wait_api.h"
#include <cstdarg>

#if DEVICE_SERIAL

#define STRING_STACK_LIMIT    120

namespace mbed {

    RawSerial::RawSerial(PinName tx, PinName rx) : SerialBase(tx, rx) {
    }

    int RawSerial::getc() {
        return _base_getc();
    }

    int RawSerial::putc(int c) {
        return _base_putc(c);
    }

    int RawSerial::puts(const char* str) {
        while (*str) {
            putc(*str ++);
        }
        return 0;
    }

    // Experimental support for printf in RawSerial. No Stream inheritance
    // means we can't call printf() directly, so we use sprintf() instead.
    // We only call malloc() for the sprintf() buffer if the buffer
    // length is above a certain threshold, otherwise we use just the stack.
    int RawSerial::printf(const char* format, ...) {
        std::va_list arg;
        va_start(arg, format);
        int len = vsnprintf(NULL, 0, format, arg);
        if (len < STRING_STACK_LIMIT) {
            char temp[STRING_STACK_LIMIT];
            vsprintf(temp, format, arg);
            puts(temp);
        } else {
            char* temp = new char[len + 1];
            vsprintf(temp, format, arg);
            puts(temp);
            delete[] temp;
        }
        va_end(arg);
        return len;
    }

} // namespace mbed

#endif
